Psychological Impotence caused by the guilt felt when cheating on your girl, affecting sex with the new girl or the one cheated on.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.

When a guy is unable to get an erection because he has yet to form an emotional connection with the female in question.

The syndrome you have after fucking a new chick that you think might be dirty.

You start thinking you've caught something but most of the time it's nothing at all.